diff --git a/10/Dockerfile.c8s b/10/Dockerfile.c8s
index 9692cd70..de499023 100644
--- a/10/Dockerfile.c8s
+++ b/10/Dockerfile.c8s
@@ -43,6 +43,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 # to make sure of that.
 RUN yum -y module enable postgresql:10 && \
     INSTALL_PKGS="rsync tar gettext bind-utils nss_wrapper postgresql-server postgresql-contrib" && \
+    INSTALL_PKGS="$INSTALL_PKGS procps-ng util-linux postgresql-upgrade" && \
     yum -y --setopt=tsflags=nodocs install $INSTALL_PKGS && \
     rpm -V $INSTALL_PKGS && \
     postgres -V | grep -qe "$POSTGRESQL_VERSION\." && echo "Found VERSION $POSTGRESQL_VERSION" && \
diff --git a/10/Dockerfile.rhel8 b/10/Dockerfile.rhel8
index 236e488b..bb15518c 100644
--- a/10/Dockerfile.rhel8
+++ b/10/Dockerfile.rhel8
@@ -44,6 +44,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 # to make sure of that.
 RUN yum -y module enable postgresql:10 && \
     INSTALL_PKGS="rsync tar gettext bind-utils nss_wrapper postgresql-server postgresql-contrib" && \
+    INSTALL_PKGS="$INSTALL_PKGS procps-ng util-linux postgresql-upgrade" && \
     yum -y --setopt=tsflags=nodocs install $INSTALL_PKGS && \
     rpm -V $INSTALL_PKGS && \
     postgres -V | grep -qe "$POSTGRESQL_VERSION\." && echo "Found VERSION $POSTGRESQL_VERSION" && \
diff --git a/10/root/usr/share/container-scripts/postgresql/common.sh b/10/root/usr/share/container-scripts/postgresql/common.sh
index 1e23f839..0b57e599 100644
--- a/10/root/usr/share/container-scripts/postgresql/common.sh
+++ b/10/root/usr/share/container-scripts/postgresql/common.sh
@@ -297,7 +297,7 @@ function wait_for_postgresql_master() {
 run_pgupgrade ()
 (
   # Remove .pid file if the file persists after ugly shut down
-  if [ -f "$PGDATA/postmaster.pid" ] && ! pgrep -f "postgres" > /dev/null; then
+  if [ -f "$PGDATA/postmaster.pid" ] && ! pg_isready > /dev/null; then
     rm -rf "$PGDATA/postmaster.pid"
   fi
 
@@ -311,8 +311,17 @@ run_pgupgrade ()
     old_collection=rh-postgresql$old_raw_version
   fi
 
-  old_pgengine=/opt/rh/$old_collection/root/usr/bin
-  new_pgengine=/opt/rh/rh-postgresql${new_raw_version}/root/usr/bin
+  # Backward compatibility for RHEL/CentOS 7
+  source /etc/os-release
+
+  if [[ $VERSION_ID -lt 8 ]]; then
+    old_pgengine=/opt/rh/$old_collection/root/usr/bin
+    new_pgengine=/opt/rh/rh-postgresql${new_raw_version}/root/usr/bin
+  else
+    old_pgengine=/usr/lib64/pgsql/postgresql-$old_raw_version/bin
+    new_pgengine=/usr/bin
+  fi
+
   PGDATA_new="${PGDATA}-new"
 
   printf >&2 "\n==========  \$PGDATA upgrade: %s -> %s  ==========\n\n" \
@@ -350,9 +359,9 @@ run_pgupgrade ()
   # boot up data directory with old postgres once again to make sure
   # it was shut down properly, otherwise the upgrade process fails
   info_msg "Starting old postgresql once again for a clean shutdown..."
-  "${old_pgengine}/pg_ctl" start -w --timeout 86400 -o "-h ''"
+  "${old_pgengine}/pg_ctl" start -w --timeout 86400 -o "-h 127.0.0.1''"
   info_msg "Waiting for postgresql to be ready for shutdown again..."
-  "${old_pgengine}/pg_isready"
+  "${old_pgengine}/pg_isready" -h 127.0.0.1
   info_msg "Shutting down old postgresql cleanly..."
   "${old_pgengine}/pg_ctl" stop
 
diff --git a/12/Dockerfile.c8s b/12/Dockerfile.c8s
index 08da9e1b..5e96630e 100644
--- a/12/Dockerfile.c8s
+++ b/12/Dockerfile.c8s
@@ -43,6 +43,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 # to make sure of that.
 RUN yum -y module enable postgresql:12 && \
     INSTALL_PKGS="rsync tar gettext bind-utils nss_wrapper postgresql-server postgresql-contrib" && \
+    INSTALL_PKGS="$INSTALL_PKGS procps-ng util-linux postgresql-upgrade" && \
     INSTALL_PKGS="$INSTALL_PKGS pgaudit" && \
     yum -y --setopt=tsflags=nodocs install $INSTALL_PKGS && \
     rpm -V $INSTALL_PKGS && \
diff --git a/12/Dockerfile.fedora b/12/Dockerfile.fedora
index f5ce3586..c9d2a1b2 100644
--- a/12/Dockerfile.fedora
+++ b/12/Dockerfile.fedora
@@ -45,6 +45,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 # safe in the future. This should *never* change, the last test is there
 # to make sure of that.
 RUN INSTALL_PKGS="rsync tar gettext bind-utils postgresql-server postgresql-contrib nss_wrapper " && \
+    INSTALL_PKGS+="procps-ng util-linux postgresql-upgrade" && \
     INSTALL_PKGS+="findutils xz" && \
     INSTALL_PKGS+=" pgaudit" && \
     dnf -y module enable postgresql:12 && \
diff --git a/12/Dockerfile.rhel8 b/12/Dockerfile.rhel8
index 9c8aa1e5..1f807edb 100644
--- a/12/Dockerfile.rhel8
+++ b/12/Dockerfile.rhel8
@@ -44,6 +44,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 # to make sure of that.
 RUN yum -y module enable postgresql:12 && \
     INSTALL_PKGS="rsync tar gettext bind-utils nss_wrapper postgresql-server postgresql-contrib" && \
+    INSTALL_PKGS="$INSTALL_PKGS procps-ng util-linux postgresql-upgrade" && \
     INSTALL_PKGS="$INSTALL_PKGS pgaudit" && \
     yum -y --setopt=tsflags=nodocs install $INSTALL_PKGS && \
     rpm -V $INSTALL_PKGS && \
diff --git a/12/root/usr/share/container-scripts/postgresql/common.sh b/12/root/usr/share/container-scripts/postgresql/common.sh
index 6a3c6f2b..eff22d87 100644
--- a/12/root/usr/share/container-scripts/postgresql/common.sh
+++ b/12/root/usr/share/container-scripts/postgresql/common.sh
@@ -297,7 +297,7 @@ function wait_for_postgresql_master() {
 run_pgupgrade ()
 (
   # Remove .pid file if the file persists after ugly shut down
-  if [ -f "$PGDATA/postmaster.pid" ] && ! pgrep -f "postgres" > /dev/null; then
+  if [ -f "$PGDATA/postmaster.pid" ] && ! pg_isready > /dev/null; then
     rm -rf "$PGDATA/postmaster.pid"
   fi
 
@@ -311,8 +311,17 @@ run_pgupgrade ()
     old_collection=rh-postgresql$old_raw_version
   fi
 
-  old_pgengine=/opt/rh/$old_collection/root/usr/bin
-  new_pgengine=/opt/rh/rh-postgresql${new_raw_version}/root/usr/bin
+  # Backward compatibility for RHEL/CentOS 7
+  source /etc/os-release
+
+  if [[ $VERSION_ID -lt 8 ]]; then
+    old_pgengine=/opt/rh/$old_collection/root/usr/bin
+    new_pgengine=/opt/rh/rh-postgresql${new_raw_version}/root/usr/bin
+  else
+    old_pgengine=/usr/lib64/pgsql/postgresql-$old_raw_version/bin
+    new_pgengine=/usr/bin
+  fi
+
   PGDATA_new="${PGDATA}-new"
 
   printf >&2 "\n==========  \$PGDATA upgrade: %s -> %s  ==========\n\n" \
@@ -350,9 +359,9 @@ run_pgupgrade ()
   # boot up data directory with old postgres once again to make sure
   # it was shut down properly, otherwise the upgrade process fails
   info_msg "Starting old postgresql once again for a clean shutdown..."
-  "${old_pgengine}/pg_ctl" start -w --timeout 86400 -o "-h ''"
+  "${old_pgengine}/pg_ctl" start -w --timeout 86400 -o "-h 127.0.0.1''"
   info_msg "Waiting for postgresql to be ready for shutdown again..."
-  "${old_pgengine}/pg_isready"
+  "${old_pgengine}/pg_isready" -h 127.0.0.1
   info_msg "Shutting down old postgresql cleanly..."
   "${old_pgengine}/pg_ctl" stop
 
diff --git a/13/Dockerfile.c8s b/13/Dockerfile.c8s
index 38a8eab8..c413487e 100644
--- a/13/Dockerfile.c8s
+++ b/13/Dockerfile.c8s
@@ -45,7 +45,7 @@ RUN yum -y module enable postgresql:13 && \
     INSTALL_PKGS="rsync tar gettext bind-utils nss_wrapper postgresql-server postgresql-contrib" && \
     INSTALL_PKGS="$INSTALL_PKGS pgaudit" && \
     INSTALL_PKGS="$INSTALL_PKGS procps-ng util-linux postgresql-upgrade" && \
-    yum -y --setopt=tsflags=nodocs --setopt=install_weak_deps=false install $INSTALL_PKGS && \
+    yum -y --setopt=tsflags=nodocs install $INSTALL_PKGS && \
     rpm -V $INSTALL_PKGS && \
     postgres -V | grep -qe "$POSTGRESQL_VERSION\." && echo "Found VERSION $POSTGRESQL_VERSION" && \
     yum -y reinstall tzdata && \
diff --git a/13/Dockerfile.fedora b/13/Dockerfile.fedora
index 9588e620..28aa3903 100644
--- a/13/Dockerfile.fedora
+++ b/13/Dockerfile.fedora
@@ -48,6 +48,7 @@ RUN INSTALL_PKGS="rsync tar gettext bind-utils postgresql-server postgresql-cont
     INSTALL_PKGS+="findutils xz" && \
     INSTALL_PKGS+=" pgaudit" && \
     INSTALL_PKGS+=" procps-ng util-linux postgresql-upgrade" && \
+    INSTALL_PKGS+=" procps-ng util-linux postgresql-upgrade" && \
     dnf -y module enable postgresql:13 && \
     dnf -y --setopt=tsflags=nodocs install $INSTALL_PKGS && \
     rpm -V $INSTALL_PKGS && \
diff --git a/13/root/usr/share/container-scripts/postgresql/common.sh b/13/root/usr/share/container-scripts/postgresql/common.sh
index 9cc5dc96..afcfc059 100644
--- a/13/root/usr/share/container-scripts/postgresql/common.sh
+++ b/13/root/usr/share/container-scripts/postgresql/common.sh
@@ -297,7 +297,7 @@ function wait_for_postgresql_master() {
 run_pgupgrade ()
 (
   # Remove .pid file if the file persists after ugly shut down
-  if [ -f "$PGDATA/postmaster.pid" ]  && ! pg_isready > /dev/null ; then
+  if [ -f "$PGDATA/postmaster.pid" ] && ! pg_isready > /dev/null; then
     rm -rf "$PGDATA/postmaster.pid"
   fi
 
@@ -311,8 +311,17 @@ run_pgupgrade ()
     old_collection=rh-postgresql$old_raw_version
   fi
 
-  old_pgengine=/usr/lib64/pgsql/postgresql-$old_raw_version/bin
-  new_pgengine=/usr/bin
+  # Backward compatibility for RHEL/CentOS 7
+  source /etc/os-release
+
+  if [[ $VERSION_ID -lt 8 ]]; then
+    old_pgengine=/opt/rh/$old_collection/root/usr/bin
+    new_pgengine=/opt/rh/rh-postgresql${new_raw_version}/root/usr/bin
+  else
+    old_pgengine=/usr/lib64/pgsql/postgresql-$old_raw_version/bin
+    new_pgengine=/usr/bin
+  fi
+
   PGDATA_new="${PGDATA}-new"
 
   printf >&2 "\n==========  \$PGDATA upgrade: %s -> %s  ==========\n\n" \
diff --git a/14/Dockerfile.fedora b/14/Dockerfile.fedora
index a1ece9c2..f8ad3d44 100644
--- a/14/Dockerfile.fedora
+++ b/14/Dockerfile.fedora
@@ -47,6 +47,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 RUN INSTALL_PKGS="rsync tar gettext bind-utils postgresql-server postgresql-contrib nss_wrapper " && \
     INSTALL_PKGS+="findutils xz" && \
     INSTALL_PKGS+=" pgaudit" && \
+    INSTALL_PKGS+=" procps-ng util-linux postgresql-upgrade" && \
     dnf -y module enable postgresql:14 && \
     dnf -y --setopt=tsflags=nodocs install $INSTALL_PKGS && \
     rpm -V $INSTALL_PKGS && \
diff --git a/14/root/usr/share/container-scripts/postgresql/common.sh b/14/root/usr/share/container-scripts/postgresql/common.sh
index 4a81bf4f..b2b7b762 100644
--- a/14/root/usr/share/container-scripts/postgresql/common.sh
+++ b/14/root/usr/share/container-scripts/postgresql/common.sh
@@ -297,7 +297,7 @@ function wait_for_postgresql_master() {
 run_pgupgrade ()
 (
   # Remove .pid file if the file persists after ugly shut down
-  if [ -f "$PGDATA/postmaster.pid" ] && ! pgrep -f "postgres" > /dev/null; then
+  if [ -f "$PGDATA/postmaster.pid" ] && ! pg_isready > /dev/null; then
     rm -rf "$PGDATA/postmaster.pid"
   fi
 
@@ -311,8 +311,17 @@ run_pgupgrade ()
     old_collection=rh-postgresql$old_raw_version
   fi
 
-  old_pgengine=/opt/rh/$old_collection/root/usr/bin
-  new_pgengine=/opt/rh/rh-postgresql${new_raw_version}/root/usr/bin
+  # Backward compatibility for RHEL/CentOS 7
+  source /etc/os-release
+
+  if [[ $VERSION_ID -lt 8 ]]; then
+    old_pgengine=/opt/rh/$old_collection/root/usr/bin
+    new_pgengine=/opt/rh/rh-postgresql${new_raw_version}/root/usr/bin
+  else
+    old_pgengine=/usr/lib64/pgsql/postgresql-$old_raw_version/bin
+    new_pgengine=/usr/bin
+  fi
+
   PGDATA_new="${PGDATA}-new"
 
   printf >&2 "\n==========  \$PGDATA upgrade: %s -> %s  ==========\n\n" \
@@ -350,9 +359,9 @@ run_pgupgrade ()
   # boot up data directory with old postgres once again to make sure
   # it was shut down properly, otherwise the upgrade process fails
   info_msg "Starting old postgresql once again for a clean shutdown..."
-  "${old_pgengine}/pg_ctl" start -w --timeout 86400 -o "-h ''"
+  "${old_pgengine}/pg_ctl" start -w --timeout 86400 -o "-h 127.0.0.1''"
   info_msg "Waiting for postgresql to be ready for shutdown again..."
-  "${old_pgengine}/pg_isready"
+  "${old_pgengine}/pg_isready" -h 127.0.0.1
   info_msg "Shutting down old postgresql cleanly..."
   "${old_pgengine}/pg_ctl" stop
 
diff --git a/15/Dockerfile.c8s b/15/Dockerfile.c8s
index 8579ca0c..632f168a 100644
--- a/15/Dockerfile.c8s
+++ b/15/Dockerfile.c8s
@@ -44,6 +44,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 RUN yum -y module enable postgresql:15 && \
     INSTALL_PKGS="rsync tar gettext bind-utils nss_wrapper postgresql-server postgresql-contrib" && \
     INSTALL_PKGS="$INSTALL_PKGS pgaudit" && \
+    INSTALL_PKGS="$INSTALL_PKGS procps-ng util-linux postgresql-upgrade" && \
     yum -y --setopt=tsflags=nodocs install $INSTALL_PKGS && \
     rpm -V $INSTALL_PKGS && \
     postgres -V | grep -qe "$POSTGRESQL_VERSION\." && echo "Found VERSION $POSTGRESQL_VERSION" && \
diff --git a/15/Dockerfile.c9s b/15/Dockerfile.c9s
index 378ea8f3..25ab942f 100644
--- a/15/Dockerfile.c9s
+++ b/15/Dockerfile.c9s
@@ -44,6 +44,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 RUN  { yum -y module enable postgresql:15 || :; } && \
     INSTALL_PKGS="rsync tar gettext bind-utils nss_wrapper postgresql-server postgresql-contrib" && \
     INSTALL_PKGS="$INSTALL_PKGS pgaudit" && \
+    INSTALL_PKGS="$INSTALL_PKGS procps-ng util-linux postgresql-upgrade" && \
     yum -y --setopt=tsflags=nodocs install $INSTALL_PKGS && \
     rpm -V $INSTALL_PKGS && \
     postgres -V | grep -qe "$POSTGRESQL_VERSION\." && echo "Found VERSION $POSTGRESQL_VERSION" && \
diff --git a/15/Dockerfile.fedora b/15/Dockerfile.fedora
index 560e3bd6..f1d680de 100644
--- a/15/Dockerfile.fedora
+++ b/15/Dockerfile.fedora
@@ -47,6 +47,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 RUN INSTALL_PKGS="rsync tar gettext bind-utils postgresql-server postgresql-contrib nss_wrapper " && \
     INSTALL_PKGS+="findutils xz" && \
     INSTALL_PKGS+=" pgaudit" && \
+    INSTALL_PKGS+=" procps-ng util-linux postgresql-upgrade" && \
     dnf -y module enable postgresql:15 && \
     dnf -y --setopt=tsflags=nodocs install $INSTALL_PKGS && \
     rpm -V $INSTALL_PKGS && \
diff --git a/15/Dockerfile.rhel8 b/15/Dockerfile.rhel8
index 76a568c0..09304483 100644
--- a/15/Dockerfile.rhel8
+++ b/15/Dockerfile.rhel8
@@ -45,6 +45,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 RUN yum -y module enable postgresql:15 && \
     INSTALL_PKGS="rsync tar gettext bind-utils nss_wrapper postgresql-server postgresql-contrib" && \
     INSTALL_PKGS="$INSTALL_PKGS pgaudit" && \
+    INSTALL_PKGS="$INSTALL_PKGS procps-ng util-linux postgresql-upgrade" && \
     yum -y --setopt=tsflags=nodocs install $INSTALL_PKGS && \
     rpm -V $INSTALL_PKGS && \
     postgres -V | grep -qe "$POSTGRESQL_VERSION\." && echo "Found VERSION $POSTGRESQL_VERSION" && \
diff --git a/15/Dockerfile.rhel9 b/15/Dockerfile.rhel9
index c464d0b5..23566a5b 100644
--- a/15/Dockerfile.rhel9
+++ b/15/Dockerfile.rhel9
@@ -45,6 +45,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 RUN { yum -y module enable postgresql:15 || :; } && \
     INSTALL_PKGS="rsync tar gettext bind-utils nss_wrapper postgresql-server postgresql-contrib" && \
     INSTALL_PKGS="$INSTALL_PKGS pgaudit" && \
+    INSTALL_PKGS="$INSTALL_PKGS procps-ng util-linux postgresql-upgrade" && \
     yum -y --setopt=tsflags=nodocs install $INSTALL_PKGS && \
     rpm -V $INSTALL_PKGS && \
     postgres -V | grep -qe "$POSTGRESQL_VERSION\." && echo "Found VERSION $POSTGRESQL_VERSION" && \
diff --git a/15/root/usr/share/container-scripts/postgresql/common.sh b/15/root/usr/share/container-scripts/postgresql/common.sh
index 35d7cc37..be2eb759 100644
--- a/15/root/usr/share/container-scripts/postgresql/common.sh
+++ b/15/root/usr/share/container-scripts/postgresql/common.sh
@@ -297,7 +297,7 @@ function wait_for_postgresql_master() {
 run_pgupgrade ()
 (
   # Remove .pid file if the file persists after ugly shut down
-  if [ -f "$PGDATA/postmaster.pid" ] && ! pgrep -f "postgres" > /dev/null; then
+  if [ -f "$PGDATA/postmaster.pid" ] && ! pg_isready > /dev/null; then
     rm -rf "$PGDATA/postmaster.pid"
   fi
 
@@ -311,8 +311,17 @@ run_pgupgrade ()
     old_collection=rh-postgresql$old_raw_version
   fi
 
-  old_pgengine=/opt/rh/$old_collection/root/usr/bin
-  new_pgengine=/opt/rh/rh-postgresql${new_raw_version}/root/usr/bin
+  # Backward compatibility for RHEL/CentOS 7
+  source /etc/os-release
+
+  if [[ $VERSION_ID -lt 8 ]]; then
+    old_pgengine=/opt/rh/$old_collection/root/usr/bin
+    new_pgengine=/opt/rh/rh-postgresql${new_raw_version}/root/usr/bin
+  else
+    old_pgengine=/usr/lib64/pgsql/postgresql-$old_raw_version/bin
+    new_pgengine=/usr/bin
+  fi
+
   PGDATA_new="${PGDATA}-new"
 
   printf >&2 "\n==========  \$PGDATA upgrade: %s -> %s  ==========\n\n" \
@@ -350,9 +359,9 @@ run_pgupgrade ()
   # boot up data directory with old postgres once again to make sure
   # it was shut down properly, otherwise the upgrade process fails
   info_msg "Starting old postgresql once again for a clean shutdown..."
-  "${old_pgengine}/pg_ctl" start -w --timeout 86400 -o "-h ''"
+  "${old_pgengine}/pg_ctl" start -w --timeout 86400 -o "-h 127.0.0.1''"
   info_msg "Waiting for postgresql to be ready for shutdown again..."
-  "${old_pgengine}/pg_isready"
+  "${old_pgengine}/pg_isready" -h 127.0.0.1
   info_msg "Shutting down old postgresql cleanly..."
   "${old_pgengine}/pg_ctl" stop
 
diff --git a/16/Dockerfile.c8s b/16/Dockerfile.c8s
index 0498931d..bcd0f283 100644
--- a/16/Dockerfile.c8s
+++ b/16/Dockerfile.c8s
@@ -44,6 +44,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 RUN yum -y module enable postgresql:16 && \
     INSTALL_PKGS="rsync tar gettext bind-utils nss_wrapper postgresql-server postgresql-contrib" && \
     INSTALL_PKGS="$INSTALL_PKGS pgaudit" && \
+    INSTALL_PKGS="$INSTALL_PKGS procps-ng util-linux postgresql-upgrade" && \
     yum -y --setopt=tsflags=nodocs install $INSTALL_PKGS && \
     rpm -V $INSTALL_PKGS && \
     postgres -V | grep -qe "$POSTGRESQL_VERSION\." && echo "Found VERSION $POSTGRESQL_VERSION" && \
diff --git a/16/Dockerfile.c9s b/16/Dockerfile.c9s
index 91b16096..7eafdcf5 100644
--- a/16/Dockerfile.c9s
+++ b/16/Dockerfile.c9s
@@ -44,6 +44,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 RUN  { yum -y module enable postgresql:16 || :; } && \
     INSTALL_PKGS="rsync tar gettext bind-utils nss_wrapper postgresql-server postgresql-contrib" && \
     INSTALL_PKGS="$INSTALL_PKGS pgaudit" && \
+    INSTALL_PKGS="$INSTALL_PKGS procps-ng util-linux postgresql-upgrade" && \
     yum -y --setopt=tsflags=nodocs install $INSTALL_PKGS && \
     rpm -V $INSTALL_PKGS && \
     postgres -V | grep -qe "$POSTGRESQL_VERSION\." && echo "Found VERSION $POSTGRESQL_VERSION" && \
diff --git a/16/Dockerfile.fedora b/16/Dockerfile.fedora
index 9c0bb6f0..668d907f 100644
--- a/16/Dockerfile.fedora
+++ b/16/Dockerfile.fedora
@@ -47,6 +47,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 RUN INSTALL_PKGS="rsync tar gettext bind-utils postgresql16-server postgresql16-contrib nss_wrapper " && \
     INSTALL_PKGS+="findutils xz" && \
     INSTALL_PKGS+=" postgresql16-pgaudit" && \
+    INSTALL_PKGS+=" procps-ng util-linux postgresql-upgrade" && \
     dnf -y --setopt=tsflags=nodocs install $INSTALL_PKGS && \
     rpm -V $INSTALL_PKGS && \
     postgres -V | grep -qe "$POSTGRESQL_VERSION\." && echo "Found VERSION $POSTGRESQL_VERSION" && \
diff --git a/16/Dockerfile.rhel8 b/16/Dockerfile.rhel8
index 70be99fe..510b8f10 100644
--- a/16/Dockerfile.rhel8
+++ b/16/Dockerfile.rhel8
@@ -45,6 +45,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 RUN yum -y module enable postgresql:16 && \
     INSTALL_PKGS="rsync tar gettext bind-utils nss_wrapper postgresql-server postgresql-contrib" && \
     INSTALL_PKGS="$INSTALL_PKGS pgaudit" && \
+    INSTALL_PKGS="$INSTALL_PKGS procps-ng util-linux postgresql-upgrade" && \
     yum -y --setopt=tsflags=nodocs install $INSTALL_PKGS && \
     rpm -V $INSTALL_PKGS && \
     postgres -V | grep -qe "$POSTGRESQL_VERSION\." && echo "Found VERSION $POSTGRESQL_VERSION" && \
diff --git a/16/Dockerfile.rhel9 b/16/Dockerfile.rhel9
index bc1009b5..a81820a1 100644
--- a/16/Dockerfile.rhel9
+++ b/16/Dockerfile.rhel9
@@ -45,6 +45,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 RUN { yum -y module enable postgresql:16 || :; } && \
     INSTALL_PKGS="rsync tar gettext bind-utils nss_wrapper postgresql-server postgresql-contrib" && \
     INSTALL_PKGS="$INSTALL_PKGS pgaudit" && \
+    INSTALL_PKGS="$INSTALL_PKGS procps-ng util-linux postgresql-upgrade" && \
     yum -y --setopt=tsflags=nodocs install $INSTALL_PKGS && \
     rpm -V $INSTALL_PKGS && \
     postgres -V | grep -qe "$POSTGRESQL_VERSION\." && echo "Found VERSION $POSTGRESQL_VERSION" && \
diff --git a/16/root/usr/share/container-scripts/postgresql/common.sh b/16/root/usr/share/container-scripts/postgresql/common.sh
index cd80bbd5..b7482bdb 100644
--- a/16/root/usr/share/container-scripts/postgresql/common.sh
+++ b/16/root/usr/share/container-scripts/postgresql/common.sh
@@ -297,7 +297,7 @@ function wait_for_postgresql_master() {
 run_pgupgrade ()
 (
   # Remove .pid file if the file persists after ugly shut down
-  if [ -f "$PGDATA/postmaster.pid" ] && ! pgrep -f "postgres" > /dev/null; then
+  if [ -f "$PGDATA/postmaster.pid" ] && ! pg_isready > /dev/null; then
     rm -rf "$PGDATA/postmaster.pid"
   fi
 
@@ -311,8 +311,17 @@ run_pgupgrade ()
     old_collection=rh-postgresql$old_raw_version
   fi
 
-  old_pgengine=/opt/rh/$old_collection/root/usr/bin
-  new_pgengine=/opt/rh/rh-postgresql${new_raw_version}/root/usr/bin
+  # Backward compatibility for RHEL/CentOS 7
+  source /etc/os-release
+
+  if [[ $VERSION_ID -lt 8 ]]; then
+    old_pgengine=/opt/rh/$old_collection/root/usr/bin
+    new_pgengine=/opt/rh/rh-postgresql${new_raw_version}/root/usr/bin
+  else
+    old_pgengine=/usr/lib64/pgsql/postgresql-$old_raw_version/bin
+    new_pgengine=/usr/bin
+  fi
+
   PGDATA_new="${PGDATA}-new"
 
   printf >&2 "\n==========  \$PGDATA upgrade: %s -> %s  ==========\n\n" \
@@ -350,9 +359,9 @@ run_pgupgrade ()
   # boot up data directory with old postgres once again to make sure
   # it was shut down properly, otherwise the upgrade process fails
   info_msg "Starting old postgresql once again for a clean shutdown..."
-  "${old_pgengine}/pg_ctl" start -w --timeout 86400 -o "-h ''"
+  "${old_pgengine}/pg_ctl" start -w --timeout 86400 -o "-h 127.0.0.1''"
   info_msg "Waiting for postgresql to be ready for shutdown again..."
-  "${old_pgengine}/pg_isready"
+  "${old_pgengine}/pg_isready" -h 127.0.0.1
   info_msg "Shutting down old postgresql cleanly..."
   "${old_pgengine}/pg_ctl" stop
 
diff --git a/src/Dockerfile b/src/Dockerfile
index 7f84f3b6..015ddd42 100644
--- a/src/Dockerfile
+++ b/src/Dockerfile
@@ -75,6 +75,7 @@ RUN {{ spec.environment_setup }}
     INSTALL_PKGS="$INSTALL_PKGS rh-postgresql{{ spec.short }}-pgaudit" && \
     {% elif spec.prod == 'rhel8' or spec.prod == 'rhel9' or spec.prod == 'c9s' or spec.prod == 'c8s' %}
     INSTALL_PKGS="$INSTALL_PKGS pgaudit" && \
+    INSTALL_PKGS="$INSTALL_PKGS procps-ng util-linux postgresql-upgrade" && \
     {% endif %}
 {% endif %}
     yum -y --setopt=tsflags=nodocs install $INSTALL_PKGS && \
diff --git a/src/Dockerfile.fedora b/src/Dockerfile.fedora
index 48accf6f..5e2e9ffe 100644
--- a/src/Dockerfile.fedora
+++ b/src/Dockerfile.fedora
@@ -50,6 +50,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 # to make sure of that.
 {% if spec.version == "16" %}
 RUN INSTALL_PKGS="rsync tar gettext bind-utils postgresql16-server postgresql16-contrib nss_wrapper " && \
+    INSTALL_PKGS+=" procps-ng util-linux postgresql-upgrade" && \
 {% else %}
 RUN INSTALL_PKGS="rsync tar gettext bind-utils postgresql-server postgresql-contrib nss_wrapper " && \
 {% endif %}
diff --git a/src/root/usr/share/container-scripts/postgresql/common.sh b/src/root/usr/share/container-scripts/postgresql/common.sh
index 74c57499..7afc7ce3 100644
--- a/src/root/usr/share/container-scripts/postgresql/common.sh
+++ b/src/root/usr/share/container-scripts/postgresql/common.sh
@@ -312,8 +312,17 @@ run_pgupgrade ()
     old_collection=rh-postgresql$old_raw_version
   fi
 
-  old_pgengine=/usr/lib64/pgsql/postgresql-$old_raw_version/bin
-  new_pgengine=/opt/rh/rh-postgresql${new_raw_version}/root/usr/bin
+  # Backward compatibility for RHEL/CentOS 7
+  source /etc/os-release
+
+  if [[ $VERSION_ID -lt 8 ]]; then
+    old_pgengine=/opt/rh/$old_collection/root/usr/bin
+    new_pgengine=/opt/rh/rh-postgresql${new_raw_version}/root/usr/bin
+  else
+    old_pgengine=/usr/lib64/pgsql/postgresql-$old_raw_version/bin
+    new_pgengine=/usr/bin
+  fi
+
   PGDATA_new="${PGDATA}-new"
 
   printf >&2 "\n==========  \$PGDATA upgrade: %s -> %s  ==========\n\n" \